plugins/urltools: add suport for python 3 (#5039)

Python 3!!!!

plugins/urltools/urltools.plugin.zsh

@@ -11,9 +11,12 @@ fi
 if [[ $(whence node) != "" && ( "x$URLTOOLS_METHOD" = "x"  || "x$URLTOOLS_METHOD" = "xnode" ) ]]; then
     alias urlencode='node -e "console.log(encodeURIComponent(process.argv[1]))"'
     alias urldecode='node -e "console.log(decodeURIComponent(process.argv[1]))"'
-elif [[ $(whence python) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xpython" ) ]]; then
-    alias urlencode='python -c "import sys, urllib as ul; print ul.quote_plus(sys.argv[1])"'
-    alias urldecode='python -c "import sys, urllib as ul; print ul.unquote_plus(sys.argv[1])"'
+elif [[ $(whence python3) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xpython" ) ]]; then
+    alias urlencode='python3 -c "import sys, urllib.parse as up; print(up.quote_plus(sys.argv[1]))"'
+    alias urldecode='python3 -c "import sys, urllib.parse as up; print(up.unquote_plus(sys.argv[1]))"'
+elif [[ $(whence python2) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xpython" ) ]]; then
+    alias urlencode='python2 -c "import sys, urllib as ul; print ul.quote_plus(sys.argv[1])"'
+    alias urldecode='python2 -c "import sys, urllib as ul; print ul.unquote_plus(sys.argv[1])"'
 elif [[ $(whence xxd) != "" && ( "x$URLTOOLS_METHOD" = "x" || "x$URLTOOLS_METHOD" = "xshell" ) ]]; then
     function urlencode() {echo $@ | tr -d "\n" | xxd -plain | sed "s/\(..\)/%\1/g"}
     function urldecode() {printf $(echo -n $@ | sed 's/\\/\\\\/g;s/\(%\)\([0-9a-fA-F][0-9a-fA-F]\)/\\x\2/g')"\n"}